There is an olden expression when elephants fight it's the grass that suffers but this morning some corporate behemoths are doing battle and us little guys we're the grass in this analogy are benefiting. Your wireless bill may be going down and ABC's Rebecca Jarvis explains. Reporter: Call them a casualty of the fierce competition for your mobile phone business. Welcome to the family. I've been hearing good things about sprint. Reporter: Sprint ditching the so-called family plan and now in place of that talking hamster. Better call quality. It's fast, right? Reporter: Launching a price war to lure customer as way from rivals. For $60 a month sprint unveiling unlimited talk, text and data. That's 20 bucks cheaper than the same plan at T-Mobile plus this extra sweetener from sprint, dump the competition and get up to $350 back. All the carriers are all competitors doing everything they can to lock up subscribers. Reporter: T-Mobile fighting back with its own new offer. Get a friend to ditch sprint, verizon or AT&T, you'll get unlimited data for a year. You're not making phone calls anymore. You're sending messages and checking Facebook and streaming video and that eats up a lot of data so people are trying to find the best data plan and the best value. Reporter: The best news about this battle for your business, the winner may actually be you. If you live in an area with a good connection from sprint or T-Mobile, go with whatever is cheaper and you're going to win out. It's unbelievable. Reporter: For "Good morning America," Rebecca Jarvis, ABC news, New York.

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